/*  
 *  @author Philip Stutz
 * 
 *  Copyright 2011 University of Zurich
 *      
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *  
 *         http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package ch.uzh.ifi.ddis.ds2011.a3.helper;

import org.openrdf.model.Statement;
import org.openrdf.rio.RDFHandler;
import org.openrdf.rio.RDFHandlerException;

/**
 * The class TripleHandler simplifies implementing classes that handle triples.
 */
public abstract class TripleHandler implements RDFHandler {

	/**
	 * Handles a triple.
	 * 
	 * @param triple
	 *            the triple that should be handled
	 */
	public abstract void handleTriple(Triple triple);

	@Override
	public void handleStatement(Statement statement) throws RDFHandlerException {
		handleTriple(new Triple(statement.getSubject().toString(), statement
				.getPredicate().toString(), statement.getObject().toString()));
	}

	@Override
	public void endRDF() throws RDFHandlerException {
	}

	@Override
	public void handleComment(String arg0) throws RDFHandlerException {
	}

	@Override
	public void handleNamespace(String arg0, String arg1)
			throws RDFHandlerException {
	}

	@Override
	public void startRDF() throws RDFHandlerException {
	}

}
